The Easy Troller holds trolling speeds as low as 1 mph. In the event of accidental acceleration, the patented spring-hinge design flexes upward, preventing damage to the trolling plate. Constructed from marine-grade aluminum and stainless steel. Mounts directly to the cavitation plate of your outboard or outdrive motor, a few inches behind the propeller. Does not included hydrofoil fins. Made in USA. One-year warranty. Standard plate fits 50 HP to 300 HP outboard and inboard motors. Marine-grade aluminum and stainless steel Does not include hydrofoil fins Standard plate fits 50 HP-300 HP I/B & O/B motors Easy Troller Hinged Metal Trolling Plate, Standard Plate without Fins Made in USA.